Stress relief device
US5143409A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1990 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Jul 10, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L35/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dynamic stress relief device for a hose having an end fitting with an end collar that receives, circumferentially surrounds, and secures the hose to the fitting. The stress relief device has a mechanism which changes the combined spring moment density of the hose over the length of the device. The length of the device is in the range of three to twenty times the diameter of the hose. The design is specifically for use on hoses subject to high frequency, high cycle, reversing linear or rotary flexing which may lead to fatigue and hysteresis loss. While the invention may find use in many dynamic environments, it is especially useful in the hydraulic brake line of a vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.